<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>引入样式表</title>
		<!-- 引用样式表 html语法步骤:1.head元素加style -->
		<style>
			/* css语法步骤 2.在style加@import url(css); */
			@import url(css/头部.css);
			@import url(css/尾部.css);
			/* 理解内部样式表--td加样式表 */
			td{
				background: #58ff63;
			}
			/* 缺点:1.引入样式表,先结构 后样式[出现延迟] 
			        2.引入样式表*/
		</style>
	</head>
	<body>
		<div>头部</div>
		<table>
			<tr>
				<td>1</td>
				<td>1</td>
			</tr>
			<tr>
				<td>2</td>
				<td>3</td>
			</tr>
		</table>
	</body>
</html>